Building Trades. a thin strip of material inserted into the edges of two boards, acoustic tiles, etc., to make a butt joint between them; a feather.
Mathematics, Engineering. a function that has specified values at a finite number of points and consists of segments of polynomial functions joined smoothly at these points, enabling it to be used for approximation and interpolation of functions.
verb (used with object), splined, splining. Machinery.
to provide with a spline or key.
to provide with a keyway.
Origin of spline
1750-60; orig. East Anglian dial.; perhaps akin to splint; compare Old Englishsplin spindle
any one of a series of narrow keys (external splines) formed longitudinally around the circumference of a shaft that fit into corresponding grooves (internal splines) in a mating part: used to prevent movement between two parts, esp in transmitting torque
a long narrow strip of wood, metal, etc; slat
a thin narrow strip made of wood, metal, or plastic fitted into a groove in the edge of a board, tile, etc, to connect it to another
(transitive) to provide (a shaft, part, etc) with splines
C18: East Anglian dialect; perhaps related to Old English splin spindle; see splint